.nz-mortgage-calculator {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 100%;
    margin: 0 auto 2em;
    padding: 1em;
    background: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    border: 1px solid #e1e1e1;
}

.nz-mortgage-calculator h2 {
    color: #006341;
    margin-top: 0;
    font-size: 1.5em;
    border-bottom: 2px solid #006341;
    padding-bottom: 0.5em;
}

.nz-mortgage-calculator p {
    margin-bottom: 1.5em;
    color: #666;
}

.calculator-container {
    margin-top: 1.5em;
}

.input-group {
    margin-bottom: 1.2em;
}

.input-group label {
    display: block;
    margin-bottom: 0.5em;
    font-weight: 600;
    color: #444;
}

.input-group input {
    width: 100%;
    padding: 0.75em;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1em;
    box-sizing: border-box;
    transition: border-color 0.3s, box-shadow 0.3s;
    -moz-appearance: textfield;
}

.input-group input[type=number]::-webkit-outer-spin-button,
.input-group input[type=number]::-webkit-inner-spin-button {
    opacity: 1;
    height: 2em;
    margin-right: 4px;
}

.input-group input:focus {
    outline: none;
    border-color: #006341;
    box-shadow: 0 0 0 2px rgba(0, 99, 65, 0.1);
}

.currency-symbol, .percentage-symbol {
    position: relative;
    display: block;
}

.currency-symbol:before {
    content: '$';
    position: absolute;
    left: 0.75em;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    font-weight: 600;
    z-index: 1;
    pointer-events: none;
}

.currency-symbol input {
    padding-left: 1.75em;
    padding-right: 0.75em;
}

.percentage-symbol:after {
    content: '%';
    position: absolute;
    right: 2.5em;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    font-weight: 600;
    z-index: 1;
    pointer-events: none;
}

.percentage-symbol input {
    padding-left: 0.75em;
    padding-right: 2.5em;
}

.percentage-symbol input[type=number] {
    -moz-appearance: textfield;
}

.percentage-symbol input[type=number]::-webkit-outer-spin-button,
.percentage-symbol input[type=number]::-webkit-inner-spin-button {
    opacity: 1;
    position: relative;
    z-index: 2;
    margin-right: 0.5em;
}

#nz_calculate_btn {
    background-color: #006341;
    color: white;
    border: none;
    padding: 0.75em 1em;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    width: 100%;
    margin-top: 0.5em;
    transition: background-color 0.3s, transform 0.1s;
    font-weight: 600;
}

#nz_calculate_btn:hover {
    background-color: #004d33;
}

#nz_calculate_btn:active {
    transform: translateY(1px);
}

.results {
    margin-top: 1.5em;
    padding: 1.2em;
    background-color: #e8f4f0;
    border-radius: 6px;
    border-left: 4px solid #006341;
}

.results h3 {
    margin-top: 0;
    color: #006341;
    font-size: 1.2em;
    margin-bottom: 1em;
}

/* Payment Frequency Tabs */
.payment-frequency-tabs {
    display: flex;
    margin-bottom: 1.5em;
    border-bottom: 2px solid #ddd;
    background: #fff;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.frequency-tab {
    flex: 1;
    background: #f8f8f8;
    border: none;
    padding: 0.75em 0.5em;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 600;
    color: #666;
    transition: all 0.3s ease;
    border-right: 1px solid #ddd;
}

.frequency-tab:last-child {
    border-right: none;
}

.frequency-tab:hover {
    background: #e8e8e8;
    color: #333;
}

.frequency-tab.active {
    background: #006341;
    color: white;
}

/* Frequency Panels */
.frequency-results {
    margin-bottom: 1.5em;
    padding: 1em;
    background: #fff;
    border-radius: 6px;
    border: 1px solid #ddd;
}

.frequency-panel {
    display: none;
}

.frequency-panel.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.frequency-panel .result-item {
    font-size: 1.1em;
    padding: 0.8em 0;
    border-bottom: 2px solid #e8f4f0;
}

.frequency-panel .result-item:last-child {
    border-bottom: none;
}

.frequency-panel .result-value {
    font-size: 1.2em;
    color: #006341;
}

.result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75em;
    font-size: 1em;
    padding: 0.5em 0;
    border-bottom: 1px solid rgba(0, 99, 65, 0.1);
}

.result-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.result-value {
    font-weight: 600;
    color: #006341;
}

/* Responsive design */
@media (max-width: 768px) {
    .nz-mortgage-calculator {
        padding: 0.8em;
        margin: 0 auto 1.5em;
    }
    
    .nz-mortgage-calculator h2 {
        font-size: 1.3em;
    }
    
    .payment-frequency-tabs {
        flex-direction: column;
        border-bottom: none;
    }
    
    .frequency-tab {
        border-right: none;
        border-bottom: 1px solid #ddd;
        margin: 0;
    }
    
    .frequency-tab:last-child {
        border-bottom: none;
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .result-value {
        margin-top: 0.2em;
    }
    
    .percentage-symbol:after {
        right: 2.2em;
    }
    
    .percentage-symbol input {
        padding-right: 2.2em;
    }
}

@media (max-width: 480px) {
    .nz-mortgage-calculator {
        padding: 0.6em;
    }
    
    .input-group input {
        padding: 0.6em;
    }
    
    .currency-symbol input {
        padding-left: 1.5em;
    }
    
    .percentage-symbol input {
        padding-right: 2em;
    }
    
    .percentage-symbol:after {
        right: 2em;
    }
    
    #nz_calculate_btn {
        padding: 0.6em;
    }
    
    .results {
        padding: 0.8em;
    }
    
    .frequency-results {
        padding: 0.8em;
    }
    
    .input-group input[type=number]::-webkit-outer-spin-button,
    .input-group input[type=number]::-webkit-inner-spin-button {
        height: 1.8em;
        margin-right: 2px;
    }
    
    .frequency-tab {
        padding: 0.6em 0.4em;
        font-size: 0.85em;
    }
}